Prepare production Docker deployment

app/Http/Controllers/Api/AuthenticatedUserController.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace App\Http\Controllers\Api;
+
+use App\Http\Controllers\Controller;
+use Illuminate\Contracts\Auth\Authenticatable;
+use Illuminate\Http\Request;
+
+class AuthenticatedUserController extends Controller
+{
+    public function __invoke(Request $request): ?Authenticatable
+    {
+        return $request->user();
+    }
+}